How to send a message to a newly added contact.?

[yaroslavche]

How to send a message to a newly added contact.?

[yaroslavche]

I think firstly you should try to createPrivateChat (https://core.telegram.org/tdlib/docs/classtd_1_1td__api_1_1create_private_chat.html) which would return chat object, in which you should try to send message

[sheko016]

hello @yaroslavche
Thank you very much for your prompt reply.
Okay, I'm going to try it and then I comment on how it went for me.
again thank you very much for the information.
and sorry for the inconvenience caused.
Regards.

[yaroslavche]

methods (which need query or execute, for example createPrivateChat)
objects (which you can receive in response, f.e. chat)

[sheko016]

hello @yaroslavche
This is to comment that the test was 100% satisfactory
I want to thank you again for the help.
I comment here on my flow to see what you think and if you could give me some other tips

Mr the flow is as follows:

I have the phone number [phone]
I import the contact with importContacts
if it returns 0 that person does not have a telegram.
If it returns an integer then that person does have a telegram and it returns the user_id of the contact.
I call all contacts with getContacts
Then I add the contact with its user_id with addContact
I call all the contacts again with getContacts -> I do not understand exactly why this step should be performed (It is something like to update the DB) -> but performing that step the complete flow works for me.
I create a private chat with the user_id with createPrivateChat
When I create a private chat it returns the chat_id
and finally I send the message with the chat_id with sendMessage

Thank you very much again for your support.

Regards.

[yaroslavche]

Looks correct to me, but this is not means, that it actually is. I don't really know all nuances, since I'm not using tdlib. Maybe i would just change one thing (if this is possible): remove importContacts query. Firstly check if contact by phone number exists, and if not, then addContact.

[sheko016]

Hi @yaroslavche

ok ok thanks.
Sorry if you are not using tdLib to use the telegram API that another library is using.?

and personally I did not find a way to verify if a contact exists within telegram.

Greetings.

[PapaEmeritusX]

hello @yaroslavche This is to comment that the test was 100% satisfactory I want to thank you again for the help. I comment here on my flow to see what you think and if you could give me some other tips

Mr the flow is as follows:

I have the phone number [phone] I import the contact with importContacts if it returns 0 that person does not have a telegram. If it returns an integer then that person does have a telegram and it returns the user_id of the contact. I call all contacts with getContacts Then I add the contact with its user_id with addContact I call all the contacts again with getContacts -> I do not understand exactly why this step should be performed (It is something like to update the DB) -> but performing that step the complete flow works for me. I create a private chat with the user_id with createPrivateChat When I create a private chat it returns the chat_id and finally I send the message with the chat_id with sendMessage

Thank you very much again for your support.

Regards.

Hi, could you share a piece of code for this procedure with TdApi?